drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c

   1 /******************************************************************************
   2  *
   3  * COPYRIGHT © 2014-2015 VMware, Inc., Palo Alto, CA., USA
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  ******************************************************************************/
  27
  28 #include "vmwgfx_kms.h"
  29 #include "device_include/svga3d_surfacedefs.h"
  30 #include <drm/drm_plane_helper.h>
  31 #include <drm/drm_atomic.h>
  32 #include <drm/drm_atomic_helper.h>
  33
  34
  35 #define vmw_crtc_to_stdu(x) \
  36         container_of(x, struct vmw_screen_target_display_unit, base.crtc)
  37 #define vmw_encoder_to_stdu(x) \
  38         container_of(x, struct vmw_screen_target_display_unit, base.encoder)
  39 #define vmw_connector_to_stdu(x) \
  40         container_of(x, struct vmw_screen_target_display_unit, base.connector)
  41
  42
  43
  44 enum stdu_content_type {
  45         SAME_AS_DISPLAY = 0,
  46         SEPARATE_SURFACE,
  47         SEPARATE_DMA
  48 };
  49
  50 /**
  51  * struct vmw_stdu_dirty - closure structure for the update functions
  52  *
  53  * @base: The base type we derive from. Used by vmw_kms_helper_dirty().
  54  * @transfer: Transfer direction for DMA command.
  55  * @left: Left side of bounding box.
  56  * @right: Right side of bounding box.
  57  * @top: Top side of bounding box.
  58  * @bottom: Bottom side of bounding box.
  59  * @fb_left: Left side of the framebuffer/content bounding box
  60  * @fb_top: Top of the framebuffer/content bounding box
  61  * @buf: DMA buffer when DMA-ing between buffer and screen targets.
  62  * @sid: Surface ID when copying between surface and screen targets.
  63  */
  64 struct vmw_stdu_dirty {
  65         struct vmw_kms_dirty base;
  66         SVGA3dTransferType  transfer;
  67         s32 left, right, top, bottom;
  68         s32 fb_left, fb_top;
  69         u32 pitch;
  70         union {
  71                 struct vmw_dma_buffer *buf;
  72                 u32 sid;
  73         };
  74 };
  75
  76 /*
  77  * SVGA commands that are used by this code. Please see the device headers
  78  * for explanation.
  79  */
  80 struct vmw_stdu_update {
  81         SVGA3dCmdHeader header;
  82         SVGA3dCmdUpdateGBScreenTarget body;
  83 };
  84
  85 struct vmw_stdu_dma {
  86         SVGA3dCmdHeader     header;
  87         SVGA3dCmdSurfaceDMA body;
  88 };
  89
  90 struct vmw_stdu_surface_copy {
  91         SVGA3dCmdHeader      header;
  92         SVGA3dCmdSurfaceCopy body;
  93 };
  94
  95
  96 /**
  97  * struct vmw_screen_target_display_unit
  98  *
  99  * @base: VMW specific DU structure
 100  * @display_srf: surface to be displayed.  The dimension of this will always
 101  *               match the display mode.  If the display mode matches
 102  *               content_vfbs dimensions, then this is a pointer into the
 103  *               corresponding field in content_vfbs.  If not, then this
 104  *               is a separate buffer to which content_vfbs will blit to.
 105  * @content_type:  content_fb type
 106  * @defined:  true if the current display unit has been initialized
 107  */
 108 struct vmw_screen_target_display_unit {
 109         struct vmw_display_unit base;
 110         const struct vmw_surface *display_srf;
 111         enum stdu_content_type content_fb_type;
 112         s32 display_width, display_height;
 113
 114         bool defined;
 115
 116         /* For CPU Blit */
 117         struct ttm_bo_kmap_obj host_map, guest_map;
 118         unsigned int cpp;
 119 };
 120
 121
 122
 123 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu);
 124
 125
 126
 127 /******************************************************************************
 128  * Screen Target Display Unit CRTC Functions
 129  *****************************************************************************/
 130
 131
 132 /**
 133  * vmw_stdu_crtc_destroy - cleans up the STDU
 134  *
 135  * @crtc: used to get a reference to the containing STDU
 136  */
 137 static void vmw_stdu_crtc_destroy(struct drm_crtc *crtc)
 138 {
 139         vmw_stdu_destroy(vmw_crtc_to_stdu(crtc));
 140 }
 141
 142 /**
 143  * vmw_stdu_define_st - Defines a Screen Target
 144  *
 145  * @dev_priv:  VMW DRM device
 146  * @stdu: display unit to create a Screen Target for
 147  * @mode: The mode to set.
 148  * @crtc_x: X coordinate of screen target relative to framebuffer origin.
 149  * @crtc_y: Y coordinate of screen target relative to framebuffer origin.
 150  *
 151  * Creates a STDU that we can used later.  This function is called whenever the
 152  * framebuffer size changes.
 153  *
 154  * RETURNs:
 155  * 0 on success, error code on failure
 156  */
 157 static int vmw_stdu_define_st(struct vmw_private *dev_priv,
 158                               struct vmw_screen_target_display_unit *stdu,
 159                               struct drm_display_mode *mode,
 160                               int crtc_x, int crtc_y)
 161 {
 162         struct {
 163                 SVGA3dCmdHeader header;
 164                 SVGA3dCmdDefineGBScreenTarget body;
 165         } *cmd;
 166
 167         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 168
 169         if (unlikely(cmd == NULL)) {
 170                 DRM_ERROR("Out of FIFO space defining Screen Target\n");
 171                 return -ENOMEM;
 172         }
 173
 174         cmd->header.id   = SVGA_3D_CMD_DEFINE_GB_SCREENTARGET;
 175         cmd->header.size = sizeof(cmd->body);
 176
 177         cmd->body.stid   = stdu->base.unit;
 178         cmd->body.width  = mode->hdisplay;
 179         cmd->body.height = mode->vdisplay;
 180         cmd->body.flags  = (0 == cmd->body.stid) ? SVGA_STFLAG_PRIMARY : 0;
 181         cmd->body.dpi    = 0;
 182         if (stdu->base.is_implicit) {
 183                 cmd->body.xRoot  = crtc_x;
 184                 cmd->body.yRoot  = crtc_y;
 185         } else {
 186                 cmd->body.xRoot  = stdu->base.gui_x;
 187                 cmd->body.yRoot  = stdu->base.gui_y;
 188         }
 189         stdu->base.set_gui_x = cmd->body.xRoot;
 190         stdu->base.set_gui_y = cmd->body.yRoot;
 191
 192         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 193
 194         stdu->defined = true;
 195         stdu->display_width  = mode->hdisplay;
 196         stdu->display_height = mode->vdisplay;
 197
 198         return 0;
 199 }
 200
 201
 202
 203 /**
 204  * vmw_stdu_bind_st - Binds a surface to a Screen Target
 205  *
 206  * @dev_priv: VMW DRM device
 207  * @stdu: display unit affected
 208  * @res: Buffer to bind to the screen target.  Set to NULL to blank screen.
 209  *
 210  * Binding a surface to a Screen Target the same as flipping
 211  */
 212 static int vmw_stdu_bind_st(struct vmw_private *dev_priv,
 213                             struct vmw_screen_target_display_unit *stdu,
 214                             const struct vmw_resource *res)
 215 {
 216         SVGA3dSurfaceImageId image;
 217
 218         struct {
 219                 SVGA3dCmdHeader header;
 220                 SVGA3dCmdBindGBScreenTarget body;
 221         } *cmd;
 222
 223
 224         if (!stdu->defined) {
 225                 DRM_ERROR("No screen target defined\n");
 226                 return -EINVAL;
 227         }
 228
 229         /* Set up image using information in vfb */
 230         memset(&image, 0, sizeof(image));
 231         image.sid = res ? res->id : SVGA3D_INVALID_ID;
 232
 233         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 234
 235         if (unlikely(cmd == NULL)) {
 236                 DRM_ERROR("Out of FIFO space binding a screen target\n");
 237                 return -ENOMEM;
 238         }
 239
 240         cmd->header.id   = SVGA_3D_CMD_BIND_GB_SCREENTARGET;
 241         cmd->header.size = sizeof(cmd->body);
 242
 243         cmd->body.stid   = stdu->base.unit;
 244         cmd->body.image  = image;
 245
 246         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 247
 248         return 0;
 249 }
 250
 251 /**
 252  * vmw_stdu_populate_update - populate an UPDATE_GB_SCREENTARGET command with a
 253  * bounding box.
 254  *
 255  * @cmd: Pointer to command stream.
 256  * @unit: Screen target unit.
 257  * @left: Left side of bounding box.
 258  * @right: Right side of bounding box.
 259  * @top: Top side of bounding box.
 260  * @bottom: Bottom side of bounding box.
 261  */
 262 static void vmw_stdu_populate_update(void *cmd, int unit,
 263                                      s32 left, s32 right, s32 top, s32 bottom)
 264 {
 265         struct vmw_stdu_update *update = cmd;
 266
 267         update->header.id   = SVGA_3D_CMD_UPDATE_GB_SCREENTARGET;
 268         update->header.size = sizeof(update->body);
 269
 270         update->body.stid   = unit;
 271         update->body.rect.x = left;
 272         update->body.rect.y = top;
 273         update->body.rect.w = right - left;
 274         update->body.rect.h = bottom - top;
 275 }
 276
 277 /**
 278  * vmw_stdu_update_st - Full update of a Screen Target
 279  *
 280  * @dev_priv: VMW DRM device
 281  * @stdu: display unit affected
 282  *
 283  * This function needs to be called whenever the content of a screen
 284  * target has changed completely. Typically as a result of a backing
 285  * surface change.
 286  *
 287  * RETURNS:
 288  * 0 on success, error code on failure
 289  */
 290 static int vmw_stdu_update_st(struct vmw_private *dev_priv,
 291                               struct vmw_screen_target_display_unit *stdu)
 292 {
 293         struct vmw_stdu_update *cmd;
 294
 295         if (!stdu->defined) {
 296                 DRM_ERROR("No screen target defined");
 297                 return -EINVAL;
 298         }
 299
 300         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 301
 302         if (unlikely(cmd == NULL)) {
 303                 DRM_ERROR("Out of FIFO space updating a Screen Target\n");
 304                 return -ENOMEM;
 305         }
 306
 307         vmw_stdu_populate_update(cmd, stdu->base.unit,
 308                                  0, stdu->display_width,
 309                                  0, stdu->display_height);
 310
 311         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 312
 313         return 0;
 314 }
 315
 316
 317
 318 /**
 319  * vmw_stdu_destroy_st - Destroy a Screen Target
 320  *
 321  * @dev_priv:  VMW DRM device
 322  * @stdu: display unit to destroy
 323  */
 324 static int vmw_stdu_destroy_st(struct vmw_private *dev_priv,
 325                                struct vmw_screen_target_display_unit *stdu)
 326 {
 327         int    ret;
 328
 329         struct {
 330                 SVGA3dCmdHeader header;
 331                 SVGA3dCmdDestroyGBScreenTarget body;
 332         } *cmd;
 333
 334
 335         /* Nothing to do if not successfully defined */
 336         if (unlikely(!stdu->defined))
 337                 return 0;
 338
 339         cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 340
 341         if (unlikely(cmd == NULL)) {
 342                 DRM_ERROR("Out of FIFO space, screen target not destroyed\n");
 343                 return -ENOMEM;
 344         }
 345
 346         cmd->header.id   = SVGA_3D_CMD_DESTROY_GB_SCREENTARGET;
 347         cmd->header.size = sizeof(cmd->body);
 348
 349         cmd->body.stid   = stdu->base.unit;
 350
 351         vmw_fifo_commit(dev_priv, sizeof(*cmd));
 352
 353         /* Force sync */
 354         ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ);
 355         if (unlikely(ret != 0))
 356                 DRM_ERROR("Failed to sync with HW");
 357
 358         stdu->defined = false;
 359         stdu->display_width  = 0;
 360         stdu->display_height = 0;
 361
 362         return ret;
 363 }
 364
 365
 366 /**
 367  * vmw_stdu_crtc_mode_set_nofb - Updates screen target size
 368  *
 369  * @crtc: CRTC associated with the screen target
 370  *
 371  * This function defines/destroys a screen target
 372  *
 373  */
 374 static void vmw_stdu_crtc_mode_set_nofb(struct drm_crtc *crtc)
 375 {
 376         struct vmw_private *dev_priv;
 377         struct vmw_screen_target_display_unit *stdu;
 378         int ret;
 379
 380
 381         stdu     = vmw_crtc_to_stdu(crtc);
 382         dev_priv = vmw_priv(crtc->dev);
 383
 384         if (stdu->defined) {
 385                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 386                 if (ret)
 387                         DRM_ERROR("Failed to blank CRTC\n");
 388
 389                 (void) vmw_stdu_update_st(dev_priv, stdu);
 390
 391                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 392                 if (ret)
 393                         DRM_ERROR("Failed to destroy Screen Target\n");
 394
 395                 stdu->content_fb_type = SAME_AS_DISPLAY;
 396         }
 397
 398         if (!crtc->state->enable)
 399                 return;
 400
 401         vmw_svga_enable(dev_priv);
 402         ret = vmw_stdu_define_st(dev_priv, stdu, &crtc->mode, crtc->x, crtc->y);
 403
 404         if (ret)
 405                 DRM_ERROR("Failed to define Screen Target of size %dx%d\n",
 406                           crtc->x, crtc->y);
 407 }
 408
 409
 410 static void vmw_stdu_crtc_helper_prepare(struct drm_crtc *crtc)
 411 {
 412 }
 413
 414
 415 static void vmw_stdu_crtc_atomic_enable(struct drm_crtc *crtc,
 416                                         struct drm_crtc_state *old_state)
 417 {
 418         struct vmw_private *dev_priv;
 419         struct vmw_screen_target_display_unit *stdu;
 420         struct vmw_framebuffer *vfb;
 421         struct drm_framebuffer *fb;
 422
 423
 424         stdu     = vmw_crtc_to_stdu(crtc);
 425         dev_priv = vmw_priv(crtc->dev);
 426         fb       = crtc->primary->fb;
 427
 428         vfb = (fb) ? vmw_framebuffer_to_vfb(fb) : NULL;
 429
 430         if (vfb)
 431                 vmw_kms_add_active(dev_priv, &stdu->base, vfb);
 432         else
 433                 vmw_kms_del_active(dev_priv, &stdu->base);
 434 }
 435
 436 static void vmw_stdu_crtc_atomic_disable(struct drm_crtc *crtc,
 437                                          struct drm_crtc_state *old_state)
 438 {
 439         struct vmw_private *dev_priv;
 440         struct vmw_screen_target_display_unit *stdu;
 441         int ret;
 442
 443
 444         if (!crtc) {
 445                 DRM_ERROR("CRTC is NULL\n");
 446                 return;
 447         }
 448
 449         stdu     = vmw_crtc_to_stdu(crtc);
 450         dev_priv = vmw_priv(crtc->dev);
 451
 452         if (stdu->defined) {
 453                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
 454                 if (ret)
 455                         DRM_ERROR("Failed to blank CRTC\n");
 456
 457                 (void) vmw_stdu_update_st(dev_priv, stdu);
 458
 459                 ret = vmw_stdu_destroy_st(dev_priv, stdu);
 460                 if (ret)
 461                         DRM_ERROR("Failed to destroy Screen Target\n");
 462
 463                 stdu->content_fb_type = SAME_AS_DISPLAY;
 464         }
 465 }
 466
 467 /**
 468  * vmw_stdu_crtc_page_flip - Binds a buffer to a screen target
 469  *
 470  * @crtc: CRTC to attach FB to
 471  * @fb: FB to attach
 472  * @event: Event to be posted. This event should've been alloced
 473  *         using k[mz]alloc, and should've been completely initialized.
 474  * @page_flip_flags: Input flags.
 475  *
 476  * If the STDU uses the same display and content buffers, i.e. a true flip,
 477  * this function will replace the existing display buffer with the new content
 478  * buffer.
 479  *
 480  * If the STDU uses different display and content buffers, i.e. a blit, then
 481  * only the content buffer will be updated.
 482  *
 483  * RETURNS:
 484  * 0 on success, error code on failure
 485  */
 486 static int vmw_stdu_crtc_page_flip(struct drm_crtc *crtc,
 487                                    struct drm_framebuffer *new_fb,
 488                                    struct drm_pending_vblank_event *event,
 489                                    uint32_t flags,
 490                                    struct drm_modeset_acquire_ctx *ctx)
 491
 492 {
 493         struct vmw_private *dev_priv = vmw_priv(crtc->dev);
 494         struct vmw_screen_target_display_unit *stdu = vmw_crtc_to_stdu(crtc);
 495         struct vmw_framebuffer *vfb = vmw_framebuffer_to_vfb(new_fb);
 496         struct drm_vmw_rect vclips;
 497         int ret;
 498
 499         dev_priv          = vmw_priv(crtc->dev);
 500         stdu              = vmw_crtc_to_stdu(crtc);
 501
 502         if (!stdu->defined || !vmw_kms_crtc_flippable(dev_priv, crtc))
 503                 return -EINVAL;
 504
 505         /*
 506          * We're always async, but the helper doesn't know how to set async
 507          * so lie to the helper. Also, the helper expects someone
 508          * to pick the event up from the crtc state, and if nobody does,
 509          * it will free it. Since we handle the event in this function,
 510          * don't hand it to the helper.
 511          */
 512         flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
 513         ret = drm_atomic_helper_page_flip(crtc, new_fb, NULL, flags, ctx);
 514         if (ret) {
 515                 DRM_ERROR("Page flip error %d.\n", ret);
 516                 return ret;
 517         }
 518
 519         if (stdu->base.is_implicit)
 520                 vmw_kms_update_implicit_fb(dev_priv, crtc);
 521
 522         /*
 523          * Now that we've bound a new surface to the screen target,
 524          * update the contents.
 525          */
 526         vclips.x = crtc->x;
 527         vclips.y = crtc->y;
 528         vclips.w = crtc->mode.hdisplay;
 529         vclips.h = crtc->mode.vdisplay;
 530
 531         if (vfb->dmabuf)
 532                 ret = vmw_kms_stdu_dma(dev_priv, NULL, vfb, NULL, NULL, &vclips,
 533                                        1, 1, true, false);
 534         else
 535                 ret = vmw_kms_stdu_surface_dirty(dev_priv, vfb, NULL, &vclips,
 536                                                  NULL, 0, 0, 1, 1, NULL);
 537         if (ret) {
 538                 DRM_ERROR("Page flip update error %d.\n", ret);
 539                 return ret;
 540         }
 541
 542         if (event) {
 543                 struct vmw_fence_obj *fence = NULL;
 544                 struct drm_file *file_priv = event->base.file_priv;
 545
 546                 vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
 547                 if (!fence)
 548                         return -ENOMEM;
 549
 550                 ret = vmw_event_fence_action_queue(file_priv, fence,
 551                                                    &event->base,
 552                                                    &event->event.tv_sec,
 553                                                    &event->event.tv_usec,
 554                                                    true);
 555                 vmw_fence_obj_unreference(&fence);
 556         } else {
 557                 (void) vmw_fifo_flush(dev_priv, false);
 558         }
 559
 560         return 0;
 561 }
 562
 563
 564 /**
 565  * vmw_stdu_dmabuf_clip - Callback to encode a suface DMA command cliprect
 566  *
 567  * @dirty: The closure structure.
 568  *
 569  * Encodes a surface DMA command cliprect and updates the bounding box
 570  * for the DMA.
 571  */
 572 static void vmw_stdu_dmabuf_clip(struct vmw_kms_dirty *dirty)
 573 {
 574         struct vmw_stdu_dirty *ddirty =
 575                 container_of(dirty, struct vmw_stdu_dirty, base);
 576         struct vmw_stdu_dma *cmd = dirty->cmd;
 577         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 578
 579         blit += dirty->num_hits;
 580         blit->srcx = dirty->fb_x;
 581         blit->srcy = dirty->fb_y;
 582         blit->x = dirty->unit_x1;
 583         blit->y = dirty->unit_y1;
 584         blit->d = 1;
 585         blit->w = dirty->unit_x2 - dirty->unit_x1;
 586         blit->h = dirty->unit_y2 - dirty->unit_y1;
 587         dirty->num_hits++;
 588
 589         if (ddirty->transfer != SVGA3D_WRITE_HOST_VRAM)
 590                 return;
 591
 592         /* Destination bounding box */
 593         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 594         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 595         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 596         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 597 }
 598
 599 /**
 600  * vmw_stdu_dmabuf_fifo_commit - Callback to fill in and submit a DMA command.
 601  *
 602  * @dirty: The closure structure.
 603  *
 604  * Fills in the missing fields in a DMA command, and optionally encodes
 605  * a screen target update command, depending on transfer direction.
 606  */
 607 static void vmw_stdu_dmabuf_fifo_commit(struct vmw_kms_dirty *dirty)
 608 {
 609         struct vmw_stdu_dirty *ddirty =
 610                 container_of(dirty, struct vmw_stdu_dirty, base);
 611         struct vmw_screen_target_display_unit *stdu =
 612                 container_of(dirty->unit, typeof(*stdu), base);
 613         struct vmw_stdu_dma *cmd = dirty->cmd;
 614         struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 615         SVGA3dCmdSurfaceDMASuffix *suffix =
 616                 (SVGA3dCmdSurfaceDMASuffix *) &blit[dirty->num_hits];
 617         size_t blit_size = sizeof(*blit) * dirty->num_hits + sizeof(*suffix);
 618
 619         if (!dirty->num_hits) {
 620                 vmw_fifo_commit(dirty->dev_priv, 0);
 621                 return;
 622         }
 623
 624         cmd->header.id = SVGA_3D_CMD_SURFACE_DMA;
 625         cmd->header.size = sizeof(cmd->body) + blit_size;
 626         vmw_bo_get_guest_ptr(&ddirty->buf->base, &cmd->body.guest.ptr);
 627         cmd->body.guest.pitch = ddirty->pitch;
 628         cmd->body.host.sid = stdu->display_srf->res.id;
 629         cmd->body.host.face = 0;
 630         cmd->body.host.mipmap = 0;
 631         cmd->body.transfer = ddirty->transfer;
 632         suffix->suffixSize = sizeof(*suffix);
 633         suffix->maximumOffset = ddirty->buf->base.num_pages * PAGE_SIZE;
 634
 635         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 636                 blit_size += sizeof(struct vmw_stdu_update);
 637
 638                 vmw_stdu_populate_update(&suffix[1], stdu->base.unit,
 639                                          ddirty->left, ddirty->right,
 640                                          ddirty->top, ddirty->bottom);
 641         }
 642
 643         vmw_fifo_commit(dirty->dev_priv, sizeof(*cmd) + blit_size);
 644
 645         ddirty->left = ddirty->top = S32_MAX;
 646         ddirty->right = ddirty->bottom = S32_MIN;
 647 }
 648
 649
 650 /**
 651  * vmw_stdu_dmabuf_cpu_clip - Callback to encode a CPU blit
 652  *
 653  * @dirty: The closure structure.
 654  *
 655  * This function calculates the bounding box for all the incoming clips.
 656  */
 657 static void vmw_stdu_dmabuf_cpu_clip(struct vmw_kms_dirty *dirty)
 658 {
 659         struct vmw_stdu_dirty *ddirty =
 660                 container_of(dirty, struct vmw_stdu_dirty, base);
 661
 662         dirty->num_hits = 1;
 663
 664         /* Calculate destination bounding box */
 665         ddirty->left = min_t(s32, ddirty->left, dirty->unit_x1);
 666         ddirty->top = min_t(s32, ddirty->top, dirty->unit_y1);
 667         ddirty->right = max_t(s32, ddirty->right, dirty->unit_x2);
 668         ddirty->bottom = max_t(s32, ddirty->bottom, dirty->unit_y2);
 669
 670         /*
 671          * Calculate content bounding box.  We only need the top-left
 672          * coordinate because width and height will be the same as the
 673          * destination bounding box above
 674          */
 675         ddirty->fb_left = min_t(s32, ddirty->fb_left, dirty->fb_x);
 676         ddirty->fb_top  = min_t(s32, ddirty->fb_top, dirty->fb_y);
 677 }
 678
 679
 680 /**
 681  * vmw_stdu_dmabuf_cpu_commit - Callback to do a CPU blit from DMAbuf
 682  *
 683  * @dirty: The closure structure.
 684  *
 685  * For the special case when we cannot create a proxy surface in a
 686  * 2D VM, we have to do a CPU blit ourselves.
 687  */
 688 static void vmw_stdu_dmabuf_cpu_commit(struct vmw_kms_dirty *dirty)
 689 {
 690         struct vmw_stdu_dirty *ddirty =
 691                 container_of(dirty, struct vmw_stdu_dirty, base);
 692         struct vmw_screen_target_display_unit *stdu =
 693                 container_of(dirty->unit, typeof(*stdu), base);
 694         s32 width, height;
 695         s32 src_pitch, dst_pitch;
 696         u8 *src, *dst;
 697         bool not_used;
 698
 699
 700         if (!dirty->num_hits)
 701                 return;
 702
 703         width = ddirty->right - ddirty->left;
 704         height = ddirty->bottom - ddirty->top;
 705
 706         if (width == 0 || height == 0)
 707                 return;
 708
 709
 710         /* Assume we are blitting from Host (display_srf) to Guest (dmabuf) */
 711         src_pitch = stdu->display_srf->base_size.width * stdu->cpp;
 712         src = ttm_kmap_obj_virtual(&stdu->host_map, &not_used);
 713         src += ddirty->top * src_pitch + ddirty->left * stdu->cpp;
 714
 715         dst_pitch = ddirty->pitch;
 716         dst = ttm_kmap_obj_virtual(&stdu->guest_map, &not_used);
 717         dst += ddirty->fb_top * dst_pitch + ddirty->fb_left * stdu->cpp;
 718
 719
 720         /* Figure out the real direction */
 721         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 722                 u8 *tmp;
 723                 s32 tmp_pitch;
 724
 725                 tmp = src;
 726                 tmp_pitch = src_pitch;
 727
 728                 src = dst;
 729                 src_pitch = dst_pitch;
 730
 731                 dst = tmp;
 732                 dst_pitch = tmp_pitch;
 733         }
 734
 735         /* CPU Blit */
 736         while (height-- > 0) {
 737                 memcpy(dst, src, width * stdu->cpp);
 738                 dst += dst_pitch;
 739                 src += src_pitch;
 740         }
 741
 742         if (ddirty->transfer == SVGA3D_WRITE_HOST_VRAM) {
 743                 struct vmw_private *dev_priv;
 744                 struct vmw_stdu_update *cmd;
 745                 struct drm_clip_rect region;
 746                 int ret;
 747
 748                 /* We are updating the actual surface, not a proxy */
 749                 region.x1 = ddirty->left;
 750                 region.x2 = ddirty->right;
 751                 region.y1 = ddirty->top;
 752                 region.y2 = ddirty->bottom;
 753                 ret = vmw_kms_update_proxy(
 754                         (struct vmw_resource *) &stdu->display_srf->res,
 755                         (const struct drm_clip_rect *) &region, 1, 1);
 756                 if (ret)
 757                         goto out_cleanup;
 758
 759
 760                 dev_priv = vmw_priv(stdu->base.crtc.dev);
 761                 cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
 762
 763                 if (!cmd) {
 764                         DRM_ERROR("Cannot reserve FIFO space to update STDU");
 765                         goto out_cleanup;
 766                 }
 767
 768                 vmw_stdu_populate_update(cmd, stdu->base.unit,
 769                                          ddirty->left, ddirty->right,
 770                                          ddirty->top, ddirty->bottom);
 771
 772                 vmw_fifo_commit(dev_priv, sizeof(*cmd));
 773         }
 774
 775 out_cleanup:
 776         ddirty->left = ddirty->top = ddirty->fb_left = ddirty->fb_top = S32_MAX;
 777         ddirty->right = ddirty->bottom = S32_MIN;
 778 }
 779
 780 /**
 781  * vmw_kms_stdu_dma - Perform a DMA transfer between a dma-buffer backed
 782  * framebuffer and the screen target system.
 783  *
 784  * @dev_priv: Pointer to the device private structure.
 785  * @file_priv: Pointer to a struct drm-file identifying the caller. May be
 786  * set to NULL, but then @user_fence_rep must also be set to NULL.
 787  * @vfb: Pointer to the dma-buffer backed framebuffer.
 788  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 789  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 790  * be NULL.
 791  * @num_clips: Number of clip rects in @clips or @vclips.
 792  * @increment: Increment to use when looping over @clips or @vclips.
 793  * @to_surface: Whether to DMA to the screen target system as opposed to
 794  * from the screen target system.
 795  * @interruptible: Whether to perform waits interruptible if possible.
 796  *
 797  * If DMA-ing till the screen target system, the function will also notify
 798  * the screen target system that a bounding box of the cliprects has been
 799  * updated.
 800  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 801  * interrupted.
 802  */
 803 int vmw_kms_stdu_dma(struct vmw_private *dev_priv,
 804                      struct drm_file *file_priv,
 805                      struct vmw_framebuffer *vfb,
 806                      struct drm_vmw_fence_rep __user *user_fence_rep,
 807                      struct drm_clip_rect *clips,
 808                      struct drm_vmw_rect *vclips,
 809                      uint32_t num_clips,
 810                      int increment,
 811                      bool to_surface,
 812                      bool interruptible)
 813 {
 814         struct vmw_dma_buffer *buf =
 815                 container_of(vfb, struct vmw_framebuffer_dmabuf, base)->buffer;
 816         struct vmw_stdu_dirty ddirty;
 817         int ret;
 818
 819         ret = vmw_kms_helper_buffer_prepare(dev_priv, buf, interruptible,
 820                                             false);
 821         if (ret)
 822                 return ret;
 823
 824         ddirty.transfer = (to_surface) ? SVGA3D_WRITE_HOST_VRAM :
 825                 SVGA3D_READ_HOST_VRAM;
 826         ddirty.left = ddirty.top = S32_MAX;
 827         ddirty.right = ddirty.bottom = S32_MIN;
 828         ddirty.fb_left = ddirty.fb_top = S32_MAX;
 829         ddirty.pitch = vfb->base.pitches[0];
 830         ddirty.buf = buf;
 831         ddirty.base.fifo_commit = vmw_stdu_dmabuf_fifo_commit;
 832         ddirty.base.clip = vmw_stdu_dmabuf_clip;
 833         ddirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_dma) +
 834                 num_clips * sizeof(SVGA3dCopyBox) +
 835                 sizeof(SVGA3dCmdSurfaceDMASuffix);
 836         if (to_surface)
 837                 ddirty.base.fifo_reserve_size += sizeof(struct vmw_stdu_update);
 838
 839         /* 2D VMs cannot use SVGA_3D_CMD_SURFACE_DMA so do CPU blit instead */
 840         if (!(dev_priv->capabilities & SVGA_CAP_3D)) {
 841                 ddirty.base.fifo_commit = vmw_stdu_dmabuf_cpu_commit;
 842                 ddirty.base.clip = vmw_stdu_dmabuf_cpu_clip;
 843                 ddirty.base.fifo_reserve_size = 0;
 844         }
 845
 846         ret = vmw_kms_helper_dirty(dev_priv, vfb, clips, vclips,
 847                                    0, 0, num_clips, increment, &ddirty.base);
 848         vmw_kms_helper_buffer_finish(dev_priv, file_priv, buf, NULL,
 849                                      user_fence_rep);
 850
 851         return ret;
 852 }
 853
 854 /**
 855  * vmw_stdu_surface_clip - Callback to encode a surface copy command cliprect
 856  *
 857  * @dirty: The closure structure.
 858  *
 859  * Encodes a surface copy command cliprect and updates the bounding box
 860  * for the copy.
 861  */
 862 static void vmw_kms_stdu_surface_clip(struct vmw_kms_dirty *dirty)
 863 {
 864         struct vmw_stdu_dirty *sdirty =
 865                 container_of(dirty, struct vmw_stdu_dirty, base);
 866         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 867         struct vmw_screen_target_display_unit *stdu =
 868                 container_of(dirty->unit, typeof(*stdu), base);
 869
 870         if (sdirty->sid != stdu->display_srf->res.id) {
 871                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 872
 873                 blit += dirty->num_hits;
 874                 blit->srcx = dirty->fb_x;
 875                 blit->srcy = dirty->fb_y;
 876                 blit->x = dirty->unit_x1;
 877                 blit->y = dirty->unit_y1;
 878                 blit->d = 1;
 879                 blit->w = dirty->unit_x2 - dirty->unit_x1;
 880                 blit->h = dirty->unit_y2 - dirty->unit_y1;
 881         }
 882
 883         dirty->num_hits++;
 884
 885         /* Destination bounding box */
 886         sdirty->left = min_t(s32, sdirty->left, dirty->unit_x1);
 887         sdirty->top = min_t(s32, sdirty->top, dirty->unit_y1);
 888         sdirty->right = max_t(s32, sdirty->right, dirty->unit_x2);
 889         sdirty->bottom = max_t(s32, sdirty->bottom, dirty->unit_y2);
 890 }
 891
 892 /**
 893  * vmw_stdu_surface_fifo_commit - Callback to fill in and submit a surface
 894  * copy command.
 895  *
 896  * @dirty: The closure structure.
 897  *
 898  * Fills in the missing fields in a surface copy command, and encodes a screen
 899  * target update command.
 900  */
 901 static void vmw_kms_stdu_surface_fifo_commit(struct vmw_kms_dirty *dirty)
 902 {
 903         struct vmw_stdu_dirty *sdirty =
 904                 container_of(dirty, struct vmw_stdu_dirty, base);
 905         struct vmw_screen_target_display_unit *stdu =
 906                 container_of(dirty->unit, typeof(*stdu), base);
 907         struct vmw_stdu_surface_copy *cmd = dirty->cmd;
 908         struct vmw_stdu_update *update;
 909         size_t blit_size = sizeof(SVGA3dCopyBox) * dirty->num_hits;
 910         size_t commit_size;
 911
 912         if (!dirty->num_hits) {
 913                 vmw_fifo_commit(dirty->dev_priv, 0);
 914                 return;
 915         }
 916
 917         if (sdirty->sid != stdu->display_srf->res.id) {
 918                 struct SVGA3dCopyBox *blit = (struct SVGA3dCopyBox *) &cmd[1];
 919
 920                 cmd->header.id = SVGA_3D_CMD_SURFACE_COPY;
 921                 cmd->header.size = sizeof(cmd->body) + blit_size;
 922                 cmd->body.src.sid = sdirty->sid;
 923                 cmd->body.dest.sid = stdu->display_srf->res.id;
 924                 update = (struct vmw_stdu_update *) &blit[dirty->num_hits];
 925                 commit_size = sizeof(*cmd) + blit_size + sizeof(*update);
 926         } else {
 927                 update = dirty->cmd;
 928                 commit_size = sizeof(*update);
 929         }
 930
 931         vmw_stdu_populate_update(update, stdu->base.unit, sdirty->left,
 932                                  sdirty->right, sdirty->top, sdirty->bottom);
 933
 934         vmw_fifo_commit(dirty->dev_priv, commit_size);
 935
 936         sdirty->left = sdirty->top = S32_MAX;
 937         sdirty->right = sdirty->bottom = S32_MIN;
 938 }
 939
 940 /**
 941  * vmw_kms_stdu_surface_dirty - Dirty part of a surface backed framebuffer
 942  *
 943  * @dev_priv: Pointer to the device private structure.
 944  * @framebuffer: Pointer to the surface-buffer backed framebuffer.
 945  * @clips: Array of clip rects. Either @clips or @vclips must be NULL.
 946  * @vclips: Alternate array of clip rects. Either @clips or @vclips must
 947  * be NULL.
 948  * @srf: Pointer to surface to blit from. If NULL, the surface attached
 949  * to @framebuffer will be used.
 950  * @dest_x: X coordinate offset to align @srf with framebuffer coordinates.
 951  * @dest_y: Y coordinate offset to align @srf with framebuffer coordinates.
 952  * @num_clips: Number of clip rects in @clips.
 953  * @inc: Increment to use when looping over @clips.
 954  * @out_fence: If non-NULL, will return a ref-counted pointer to a
 955  * struct vmw_fence_obj. The returned fence pointer may be NULL in which
 956  * case the device has already synchronized.
 957  *
 958  * Returns 0 on success, negative error code on failure. -ERESTARTSYS if
 959  * interrupted.
 960  */
 961 int vmw_kms_stdu_surface_dirty(struct vmw_private *dev_priv,
 962                                struct vmw_framebuffer *framebuffer,
 963                                struct drm_clip_rect *clips,
 964                                struct drm_vmw_rect *vclips,
 965                                struct vmw_resource *srf,
 966                                s32 dest_x,
 967                                s32 dest_y,
 968                                unsigned num_clips, int inc,
 969                                struct vmw_fence_obj **out_fence)
 970 {
 971         struct vmw_framebuffer_surface *vfbs =
 972                 container_of(framebuffer, typeof(*vfbs), base);
 973         struct vmw_stdu_dirty sdirty;
 974         int ret;
 975
 976         if (!srf)
 977                 srf = &vfbs->surface->res;
 978
 979         ret = vmw_kms_helper_resource_prepare(srf, true);
 980         if (ret)
 981                 return ret;
 982
 983         if (vfbs->is_dmabuf_proxy) {
 984                 ret = vmw_kms_update_proxy(srf, clips, num_clips, inc);
 985                 if (ret)
 986                         goto out_finish;
 987         }
 988
 989         sdirty.base.fifo_commit = vmw_kms_stdu_surface_fifo_commit;
 990         sdirty.base.clip = vmw_kms_stdu_surface_clip;
 991         sdirty.base.fifo_reserve_size = sizeof(struct vmw_stdu_surface_copy) +
 992                 sizeof(SVGA3dCopyBox) * num_clips +
 993                 sizeof(struct vmw_stdu_update);
 994         sdirty.sid = srf->id;
 995         sdirty.left = sdirty.top = S32_MAX;
 996         sdirty.right = sdirty.bottom = S32_MIN;
 997
 998         ret = vmw_kms_helper_dirty(dev_priv, framebuffer, clips, vclips,
 999                                    dest_x, dest_y, num_clips, inc,
1000                                    &sdirty.base);
1001 out_finish:
1002         vmw_kms_helper_resource_finish(srf, out_fence);
1003
1004         return ret;
1005 }
1006
1007
1008 /*
1009  *  Screen Target CRTC dispatch table
1010  */
1011 static const struct drm_crtc_funcs vmw_stdu_crtc_funcs = {
1012         .gamma_set = vmw_du_crtc_gamma_set,
1013         .destroy = vmw_stdu_crtc_destroy,
1014         .reset = vmw_du_crtc_reset,
1015         .atomic_duplicate_state = vmw_du_crtc_duplicate_state,
1016         .atomic_destroy_state = vmw_du_crtc_destroy_state,
1017         .set_config = vmw_kms_set_config,
1018         .page_flip = vmw_stdu_crtc_page_flip,
1019 };
1020
1021
1022
1023 /******************************************************************************
1024  * Screen Target Display Unit Encoder Functions
1025  *****************************************************************************/
1026
1027 /**
1028  * vmw_stdu_encoder_destroy - cleans up the STDU
1029  *
1030  * @encoder: used the get the containing STDU
1031  *
1032  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1033  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
1034  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1035  * get called.
1036  */
1037 static void vmw_stdu_encoder_destroy(struct drm_encoder *encoder)
1038 {
1039         vmw_stdu_destroy(vmw_encoder_to_stdu(encoder));
1040 }
1041
1042 static const struct drm_encoder_funcs vmw_stdu_encoder_funcs = {
1043         .destroy = vmw_stdu_encoder_destroy,
1044 };
1045
1046
1047
1048 /******************************************************************************
1049  * Screen Target Display Unit Connector Functions
1050  *****************************************************************************/
1051
1052 /**
1053  * vmw_stdu_connector_destroy - cleans up the STDU
1054  *
1055  * @connector: used to get the containing STDU
1056  *
1057  * vmwgfx cleans up crtc/encoder/connector all at the same time so technically
1058  * this can be a no-op.  Nevertheless, it doesn't hurt of have this in case
1059  * the common KMS code changes and somehow vmw_stdu_crtc_destroy() doesn't
1060  * get called.
1061  */
1062 static void vmw_stdu_connector_destroy(struct drm_connector *connector)
1063 {
1064         vmw_stdu_destroy(vmw_connector_to_stdu(connector));
1065 }
1066
1067
1068
1069 static const struct drm_connector_funcs vmw_stdu_connector_funcs = {
1070         .dpms = vmw_du_connector_dpms,
1071         .detect = vmw_du_connector_detect,
1072         .fill_modes = vmw_du_connector_fill_modes,
1073         .set_property = vmw_du_connector_set_property,
1074         .destroy = vmw_stdu_connector_destroy,
1075         .reset = vmw_du_connector_reset,
1076         .atomic_duplicate_state = vmw_du_connector_duplicate_state,
1077         .atomic_destroy_state = vmw_du_connector_destroy_state,
1078         .atomic_set_property = vmw_du_connector_atomic_set_property,
1079         .atomic_get_property = vmw_du_connector_atomic_get_property,
1080 };
1081
1082
1083 static const struct
1084 drm_connector_helper_funcs vmw_stdu_connector_helper_funcs = {
1085         .best_encoder = drm_atomic_helper_best_encoder,
1086 };
1087
1088
1089
1090 /******************************************************************************
1091  * Screen Target Display Plane Functions
1092  *****************************************************************************/
1093
1094
1095
1096 /**
1097  * vmw_stdu_primary_plane_cleanup_fb - Unpins the display surface
1098  *
1099  * @plane:  display plane
1100  * @old_state: Contains the FB to clean up
1101  *
1102  * Unpins the display surface
1103  *
1104  * Returns 0 on success
1105  */
1106 static void
1107 vmw_stdu_primary_plane_cleanup_fb(struct drm_plane *plane,
1108                                   struct drm_plane_state *old_state)
1109 {
1110         struct vmw_plane_state *vps = vmw_plane_state_to_vps(old_state);
1111
1112         if (vps->guest_map.virtual)
1113                 ttm_bo_kunmap(&vps->guest_map);
1114
1115         if (vps->host_map.virtual)
1116                 ttm_bo_kunmap(&vps->host_map);
1117
1118         if (vps->surf)
1119                 WARN_ON(!vps->pinned);
1120
1121         vmw_du_plane_cleanup_fb(plane, old_state);
1122
1123         vps->content_fb_type = SAME_AS_DISPLAY;
1124         vps->cpp = 0;
1125 }
1126
1127
1128
1129 /**
1130  * vmw_stdu_primary_plane_prepare_fb - Readies the display surface
1131  *
1132  * @plane:  display plane
1133  * @new_state: info on the new plane state, including the FB
1134  *
1135  * This function allocates a new display surface if the content is
1136  * backed by a DMA.  The display surface is pinned here, and it'll
1137  * be unpinned in .cleanup_fb()
1138  *
1139  * Returns 0 on success
1140  */
1141 static int
1142 vmw_stdu_primary_plane_prepare_fb(struct drm_plane *plane,
1143                                   struct drm_plane_state *new_state)
1144 {
1145         struct vmw_private *dev_priv = vmw_priv(plane->dev);
1146         struct drm_framebuffer *new_fb = new_state->fb;
1147         struct vmw_framebuffer *vfb;
1148         struct vmw_plane_state *vps = vmw_plane_state_to_vps(new_state);
1149         enum stdu_content_type new_content_type;
1150         struct vmw_framebuffer_surface *new_vfbs;
1151         struct drm_crtc *crtc = new_state->crtc;
1152         uint32_t hdisplay = new_state->crtc_w, vdisplay = new_state->crtc_h;
1153         int ret;
1154
1155         /* No FB to prepare */
1156         if (!new_fb) {
1157                 if (vps->surf) {
1158                         WARN_ON(vps->pinned != 0);
1159                         vmw_surface_unreference(&vps->surf);
1160                 }
1161
1162                 return 0;
1163         }
1164
1165         vfb = vmw_framebuffer_to_vfb(new_fb);
1166         new_vfbs = (vfb->dmabuf) ? NULL : vmw_framebuffer_to_vfbs(new_fb);
1167
1168         if (new_vfbs && new_vfbs->surface->base_size.width == hdisplay &&
1169             new_vfbs->surface->base_size.height == vdisplay)
1170                 new_content_type = SAME_AS_DISPLAY;
1171         else if (vfb->dmabuf)
1172                 new_content_type = SEPARATE_DMA;
1173         else
1174                 new_content_type = SEPARATE_SURFACE;
1175
1176         if (new_content_type != SAME_AS_DISPLAY) {
1177                 struct vmw_surface content_srf;
1178                 struct drm_vmw_size display_base_size = {0};
1179
1180                 display_base_size.width  = hdisplay;
1181                 display_base_size.height = vdisplay;
1182                 display_base_size.depth  = 1;
1183
1184                 /*
1185                  * If content buffer is a DMA buf, then we have to construct
1186                  * surface info
1187                  */
1188                 if (new_content_type == SEPARATE_DMA) {
1189
1190                         switch (new_fb->format->cpp[0]*8) {
1191                         case 32:
1192                                 content_srf.format = SVGA3D_X8R8G8B8;
1193                                 break;
1194
1195                         case 16:
1196                                 content_srf.format = SVGA3D_R5G6B5;
1197                                 break;
1198
1199                         case 8:
1200                                 content_srf.format = SVGA3D_P8;
1201                                 break;
1202
1203                         default:
1204                                 DRM_ERROR("Invalid format\n");
1205                                 return -EINVAL;
1206                         }
1207
1208                         content_srf.flags             = 0;
1209                         content_srf.mip_levels[0]     = 1;
1210                         content_srf.multisample_count = 0;
1211                 } else {
1212                         content_srf = *new_vfbs->surface;
1213                 }
1214
1215                 if (vps->surf) {
1216                         struct drm_vmw_size cur_base_size = vps->surf->base_size;
1217
1218                         if (cur_base_size.width != display_base_size.width ||
1219                             cur_base_size.height != display_base_size.height ||
1220                             vps->surf->format != content_srf.format) {
1221                                 WARN_ON(vps->pinned != 0);
1222                                 vmw_surface_unreference(&vps->surf);
1223                         }
1224
1225                 }
1226
1227                 if (!vps->surf) {
1228                         ret = vmw_surface_gb_priv_define
1229                                 (crtc->dev,
1230                                  /* Kernel visible only */
1231                                  0,
1232                                  content_srf.flags,
1233                                  content_srf.format,
1234                                  true,  /* a scanout buffer */
1235                                  content_srf.mip_levels[0],
1236                                  content_srf.multisample_count,
1237                                  0,
1238                                  display_base_size,
1239                                  &vps->surf);
1240                         if (ret != 0) {
1241                                 DRM_ERROR("Couldn't allocate STDU surface.\n");
1242                                 return ret;
1243                         }
1244                 }
1245         } else {
1246                 /*
1247                  * prepare_fb and clean_fb should only take care of pinning
1248                  * and unpinning.  References are tracked by state objects.
1249                  * The only time we add a reference in prepare_fb is if the
1250                  * state object doesn't have a reference to begin with
1251                  */
1252                 if (vps->surf) {
1253                         WARN_ON(vps->pinned != 0);
1254                         vmw_surface_unreference(&vps->surf);
1255                 }
1256
1257                 vps->surf = vmw_surface_reference(new_vfbs->surface);
1258         }
1259
1260         if (vps->surf) {
1261
1262                 /* Pin new surface before flipping */
1263                 ret = vmw_resource_pin(&vps->surf->res, false);
1264                 if (ret)
1265                         goto out_srf_unref;
1266
1267                 vps->pinned++;
1268         }
1269
1270         vps->content_fb_type = new_content_type;
1271
1272         /*
1273          * This should only happen if the DMA buf is too large to create a
1274          * proxy surface for.
1275          * If we are a 2D VM with a DMA buffer then we have to use CPU blit
1276          * so cache these mappings
1277          */
1278         if (vps->content_fb_type == SEPARATE_DMA &&
1279             !(dev_priv->capabilities & SVGA_CAP_3D)) {
1280
1281                 struct vmw_framebuffer_dmabuf *new_vfbd;
1282
1283                 new_vfbd = vmw_framebuffer_to_vfbd(new_fb);
1284
1285                 ret = ttm_bo_reserve(&new_vfbd->buffer->base, false, false,
1286                                      NULL);
1287                 if (ret)
1288                         goto out_srf_unpin;
1289
1290                 ret = ttm_bo_kmap(&new_vfbd->buffer->base, 0,
1291                                   new_vfbd->buffer->base.num_pages,
1292                                   &vps->guest_map);
1293
1294                 ttm_bo_unreserve(&new_vfbd->buffer->base);
1295
1296                 if (ret) {
1297                         DRM_ERROR("Failed to map content buffer to CPU\n");
1298                         goto out_srf_unpin;
1299                 }
1300
1301                 ret = ttm_bo_kmap(&vps->surf->res.backup->base, 0,
1302                                   vps->surf->res.backup->base.num_pages,
1303                                   &vps->host_map);
1304                 if (ret) {
1305                         DRM_ERROR("Failed to map display buffer to CPU\n");
1306                         ttm_bo_kunmap(&vps->guest_map);
1307                         goto out_srf_unpin;
1308                 }
1309
1310                 vps->cpp = new_fb->pitches[0] / new_fb->width;
1311         }
1312
1313         return 0;
1314
1315 out_srf_unpin:
1316         vmw_resource_unpin(&vps->surf->res);
1317         vps->pinned--;
1318
1319 out_srf_unref:
1320         vmw_surface_unreference(&vps->surf);
1321         return ret;
1322 }
1323
1324
1325
1326 /**
1327  * vmw_stdu_primary_plane_atomic_update - formally switches STDU to new plane
1328  *
1329  * @plane: display plane
1330  * @old_state: Only used to get crtc info
1331  *
1332  * Formally update stdu->display_srf to the new plane, and bind the new
1333  * plane STDU.  This function is called during the commit phase when
1334  * all the preparation have been done and all the configurations have
1335  * been checked.
1336  */
1337 static void
1338 vmw_stdu_primary_plane_atomic_update(struct drm_plane *plane,
1339                                      struct drm_plane_state *old_state)
1340 {
1341         struct vmw_private *dev_priv;
1342         struct vmw_screen_target_display_unit *stdu;
1343         struct vmw_plane_state *vps = vmw_plane_state_to_vps(plane->state);
1344         struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc;
1345         int ret;
1346
1347         stdu     = vmw_crtc_to_stdu(crtc);
1348         dev_priv = vmw_priv(crtc->dev);
1349
1350         stdu->display_srf = vps->surf;
1351         stdu->content_fb_type = vps->content_fb_type;
1352         stdu->cpp = vps->cpp;
1353         memcpy(&stdu->guest_map, &vps->guest_map, sizeof(vps->guest_map));
1354         memcpy(&stdu->host_map, &vps->host_map, sizeof(vps->host_map));
1355
1356         if (!stdu->defined)
1357                 return;
1358
1359         if (plane->state->fb)
1360                 ret = vmw_stdu_bind_st(dev_priv, stdu, &stdu->display_srf->res);
1361         else
1362                 ret = vmw_stdu_bind_st(dev_priv, stdu, NULL);
1363
1364         /*
1365          * We cannot really fail this function, so if we do, then output an
1366          * error and quit
1367          */
1368         if (ret)
1369                 DRM_ERROR("Failed to bind surface to STDU.\n");
1370         else
1371                 crtc->primary->fb = plane->state->fb;
1372
1373         ret = vmw_stdu_update_st(dev_priv, stdu);
1374
1375         if (ret)
1376                 DRM_ERROR("Failed to update STDU.\n");
1377 }
1378
1379
1380 static const struct drm_plane_funcs vmw_stdu_plane_funcs = {
1381         .update_plane = drm_atomic_helper_update_plane,
1382         .disable_plane = drm_atomic_helper_disable_plane,
1383         .destroy = vmw_du_primary_plane_destroy,
1384         .reset = vmw_du_plane_reset,
1385         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1386         .atomic_destroy_state = vmw_du_plane_destroy_state,
1387 };
1388
1389 static const struct drm_plane_funcs vmw_stdu_cursor_funcs = {
1390         .update_plane = drm_atomic_helper_update_plane,
1391         .disable_plane = drm_atomic_helper_disable_plane,
1392         .destroy = vmw_du_cursor_plane_destroy,
1393         .reset = vmw_du_plane_reset,
1394         .atomic_duplicate_state = vmw_du_plane_duplicate_state,
1395         .atomic_destroy_state = vmw_du_plane_destroy_state,
1396 };
1397
1398
1399 /*
1400  * Atomic Helpers
1401  */
1402 static const struct
1403 drm_plane_helper_funcs vmw_stdu_cursor_plane_helper_funcs = {
1404         .atomic_check = vmw_du_cursor_plane_atomic_check,
1405         .atomic_update = vmw_du_cursor_plane_atomic_update,
1406         .prepare_fb = vmw_du_cursor_plane_prepare_fb,
1407         .cleanup_fb = vmw_du_plane_cleanup_fb,
1408 };
1409
1410 static const struct
1411 drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
1412         .atomic_check = vmw_du_primary_plane_atomic_check,
1413         .atomic_update = vmw_stdu_primary_plane_atomic_update,
1414         .prepare_fb = vmw_stdu_primary_plane_prepare_fb,
1415         .cleanup_fb = vmw_stdu_primary_plane_cleanup_fb,
1416 };
1417
1418 static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
1419         .prepare = vmw_stdu_crtc_helper_prepare,
1420         .mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
1421         .atomic_check = vmw_du_crtc_atomic_check,
1422         .atomic_begin = vmw_du_crtc_atomic_begin,
1423         .atomic_flush = vmw_du_crtc_atomic_flush,
1424         .atomic_enable = vmw_stdu_crtc_atomic_enable,
1425         .atomic_disable = vmw_stdu_crtc_atomic_disable,
1426 };
1427
1428
1429 /**
1430  * vmw_stdu_init - Sets up a Screen Target Display Unit
1431  *
1432  * @dev_priv: VMW DRM device
1433  * @unit: unit number range from 0 to VMWGFX_NUM_DISPLAY_UNITS
1434  *
1435  * This function is called once per CRTC, and allocates one Screen Target
1436  * display unit to represent that CRTC.  Since the SVGA device does not separate
1437  * out encoder and connector, they are represented as part of the STDU as well.
1438  */
1439 static int vmw_stdu_init(struct vmw_private *dev_priv, unsigned unit)
1440 {
1441         struct vmw_screen_target_display_unit *stdu;
1442         struct drm_device *dev = dev_priv->dev;
1443         struct drm_connector *connector;
1444         struct drm_encoder *encoder;
1445         struct drm_plane *primary, *cursor;
1446         struct drm_crtc *crtc;
1447         int    ret;
1448
1449
1450         stdu = kzalloc(sizeof(*stdu), GFP_KERNEL);
1451         if (!stdu)
1452                 return -ENOMEM;
1453
1454         stdu->base.unit = unit;
1455         crtc = &stdu->base.crtc;
1456         encoder = &stdu->base.encoder;
1457         connector = &stdu->base.connector;
1458         primary = &stdu->base.primary;
1459         cursor = &stdu->base.cursor;
1460
1461         stdu->base.pref_active = (unit == 0);
1462         stdu->base.pref_width  = dev_priv->initial_width;
1463         stdu->base.pref_height = dev_priv->initial_height;
1464
1465         /*
1466          * Remove this after enabling atomic because property values can
1467          * only exist in a state object
1468          */
1469         stdu->base.is_implicit = false;
1470
1471         /* Initialize primary plane */
1472         vmw_du_plane_reset(primary);
1473
1474         ret = drm_universal_plane_init(dev, primary,
1475                                        0, &vmw_stdu_plane_funcs,
1476                                        vmw_primary_plane_formats,
1477                                        ARRAY_SIZE(vmw_primary_plane_formats),
1478                                        NULL, DRM_PLANE_TYPE_PRIMARY, NULL);
1479         if (ret) {
1480                 DRM_ERROR("Failed to initialize primary plane");
1481                 goto err_free;
1482         }
1483
1484         drm_plane_helper_add(primary, &vmw_stdu_primary_plane_helper_funcs);
1485
1486         /* Initialize cursor plane */
1487         vmw_du_plane_reset(cursor);
1488
1489         ret = drm_universal_plane_init(dev, cursor,
1490                         0, &vmw_stdu_cursor_funcs,
1491                         vmw_cursor_plane_formats,
1492                         ARRAY_SIZE(vmw_cursor_plane_formats),
1493                         NULL, DRM_PLANE_TYPE_CURSOR, NULL);
1494         if (ret) {
1495                 DRM_ERROR("Failed to initialize cursor plane");
1496                 drm_plane_cleanup(&stdu->base.primary);
1497                 goto err_free;
1498         }
1499
1500         drm_plane_helper_add(cursor, &vmw_stdu_cursor_plane_helper_funcs);
1501
1502         vmw_du_connector_reset(connector);
1503
1504         ret = drm_connector_init(dev, connector, &vmw_stdu_connector_funcs,
1505                                  DRM_MODE_CONNECTOR_VIRTUAL);
1506         if (ret) {
1507                 DRM_ERROR("Failed to initialize connector\n");
1508                 goto err_free;
1509         }
1510
1511         drm_connector_helper_add(connector, &vmw_stdu_connector_helper_funcs);
1512         connector->status = vmw_du_connector_detect(connector, false);
1513         vmw_connector_state_to_vcs(connector->state)->is_implicit = false;
1514
1515         ret = drm_encoder_init(dev, encoder, &vmw_stdu_encoder_funcs,
1516                                DRM_MODE_ENCODER_VIRTUAL, NULL);
1517         if (ret) {
1518                 DRM_ERROR("Failed to initialize encoder\n");
1519                 goto err_free_connector;
1520         }
1521
1522         (void) drm_mode_connector_attach_encoder(connector, encoder);
1523         encoder->possible_crtcs = (1 << unit);
1524         encoder->possible_clones = 0;
1525
1526         ret = drm_connector_register(connector);
1527         if (ret) {
1528                 DRM_ERROR("Failed to register connector\n");
1529                 goto err_free_encoder;
1530         }
1531
1532         vmw_du_crtc_reset(crtc);
1533         ret = drm_crtc_init_with_planes(dev, crtc, &stdu->base.primary,
1534                                         &stdu->base.cursor,
1535                                         &vmw_stdu_crtc_funcs, NULL);
1536         if (ret) {
1537                 DRM_ERROR("Failed to initialize CRTC\n");
1538                 goto err_free_unregister;
1539         }
1540
1541         drm_crtc_helper_add(crtc, &vmw_stdu_crtc_helper_funcs);
1542
1543         drm_mode_crtc_set_gamma_size(crtc, 256);
1544
1545         drm_object_attach_property(&connector->base,
1546                                    dev_priv->hotplug_mode_update_property, 1);
1547         drm_object_attach_property(&connector->base,
1548                                    dev->mode_config.suggested_x_property, 0);
1549         drm_object_attach_property(&connector->base,
1550                                    dev->mode_config.suggested_y_property, 0);
1551         if (dev_priv->implicit_placement_property)
1552                 drm_object_attach_property
1553                         (&connector->base,
1554                          dev_priv->implicit_placement_property,
1555                          stdu->base.is_implicit);
1556         return 0;
1557
1558 err_free_unregister:
1559         drm_connector_unregister(connector);
1560 err_free_encoder:
1561         drm_encoder_cleanup(encoder);
1562 err_free_connector:
1563         drm_connector_cleanup(connector);
1564 err_free:
1565         kfree(stdu);
1566         return ret;
1567 }
1568
1569
1570
1571 /**
1572  *  vmw_stdu_destroy - Cleans up a vmw_screen_target_display_unit
1573  *
1574  *  @stdu:  Screen Target Display Unit to be destroyed
1575  *
1576  *  Clean up after vmw_stdu_init
1577  */
1578 static void vmw_stdu_destroy(struct vmw_screen_target_display_unit *stdu)
1579 {
1580         vmw_du_cleanup(&stdu->base);
1581         kfree(stdu);
1582 }
1583
1584
1585
1586 /******************************************************************************
1587  * Screen Target Display KMS Functions
1588  *
1589  * These functions are called by the common KMS code in vmwgfx_kms.c
1590  *****************************************************************************/
1591
1592 /**
1593  * vmw_kms_stdu_init_display - Initializes a Screen Target based display
1594  *
1595  * @dev_priv: VMW DRM device
1596  *
1597  * This function initialize a Screen Target based display device.  It checks
1598  * the capability bits to make sure the underlying hardware can support
1599  * screen targets, and then creates the maximum number of CRTCs, a.k.a Display
1600  * Units, as supported by the display hardware.
1601  *
1602  * RETURNS:
1603  * 0 on success, error code otherwise
1604  */
1605 int vmw_kms_stdu_init_display(struct vmw_private *dev_priv)
1606 {
1607         struct drm_device *dev = dev_priv->dev;
1608         int i, ret;
1609
1610
1611         /* Do nothing if Screen Target support is turned off */
1612         if (!VMWGFX_ENABLE_SCREEN_TARGET_OTABLE)
1613                 return -ENOSYS;
1614
1615         if (!(dev_priv->capabilities & SVGA_CAP_GBOBJECTS))
1616                 return -ENOSYS;
1617
1618         ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS);
1619         if (unlikely(ret != 0))
1620                 return ret;
1621
1622         dev_priv->active_display_unit = vmw_du_screen_target;
1623
1624         if (dev_priv->capabilities & SVGA_CAP_3D) {
1625                 /*
1626                  * For 3D VMs, display (scanout) buffer size is the smaller of
1627                  * max texture and max STDU
1628                  */
1629                 uint32_t max_width, max_height;
1630
1631                 max_width = min(dev_priv->texture_max_width,
1632                                 dev_priv->stdu_max_width);
1633                 max_height = min(dev_priv->texture_max_height,
1634                                  dev_priv->stdu_max_height);
1635
1636                 dev->mode_config.max_width = max_width;
1637                 dev->mode_config.max_height = max_height;
1638         } else {
1639                 /*
1640                  * Given various display aspect ratios, there's no way to
1641                  * estimate these using prim_bb_mem.  So just set these to
1642                  * something arbitrarily large and we will reject any layout
1643                  * that doesn't fit prim_bb_mem later
1644                  */
1645                 dev->mode_config.max_width = 8192;
1646                 dev->mode_config.max_height = 8192;
1647         }
1648
1649         vmw_kms_create_implicit_placement_property(dev_priv, false);
1650
1651         for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) {
1652                 ret = vmw_stdu_init(dev_priv, i);
1653
1654                 if (unlikely(ret != 0)) {
1655                         DRM_ERROR("Failed to initialize STDU %d", i);
1656                         return ret;
1657                 }
1658         }
1659
1660         DRM_INFO("Screen Target Display device initialized\n");
1661
1662         return 0;
1663 }